difficult是加动词ing?还是加to do sth.
difficult是加动词ing?还是加to do sth.
it's no good 是加动词ing形式还是加to do sth.
why not 是加to do sth. 还是 动词原形
为什么 有的动词后加 动词ing 有的加 to do sth
practise后面加动词ing还是to do?
must 后面是加to do sth.还是do sth.
must 后面是加do sth.还是 to do sth.
do well in后面是加动词原形还是ing
be going to do going是动词加ing吗
thanks to 后面的动词是原形还是加ing
consider后面的动词是加to还是ing?
怎么决定to后面是加ing还是动词原型